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Serial ports should not be configured on generation 2 virtual machines

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Applies to: Windows Server 2022, Windows Server 2019, Windows Server 2016

For more information about best practices and scans, see Run Best Practices Analyzer Scans and Manage Scan Results.

Property Details
Operating System Windows Server 2016
Product/Feature Hyper-V
Severity Warning
Category Configuration

In the following sections, italics indicates UI text that appears in the Best Practices Analyzer tool for this issue.

Issue

One or more generation 2 virtual machines have a serial port configured.

Impact

Performance might be affected for the following virtual machines:

<list of virtual machines>

Resolution

If this is intentional, no further action is required. Otherwise, consider using Hyper-V Manager or Windows PowerShell to remove the connection string from the serial ports on the virtual machine.